Miter forming device for curtains and the like



July 26, 1938.

D. H. ROSENBERG MITER FORMING DEVICE FOR CURTAINS AND THE LIKE Filed Nov. 1'7, 1937 3 Sheets-Sheet 1 NVENTOR. pay/d hifiasmbe ATTORNEY.

i 1933- D. H. ROSENBERG 2,124,714

MITER FORMING DEVICE FOR CURTAINS AND THE LIKE Filgd Nov. 17, 1937 3 Sheets-Sheet 2 INVENT OR.

BY David H. Rosenberg.

fiaaiwq, g

ATTOR NEY.

July 26, 1938. D. H. ROSENBERG 2,124,714

MITER FORMING DEVICE FOR CURTAINS AND THE LIKE Filed Nov. 17, 1937 :s Sheets-Sheet s as d 32 az ac I 34' INVENTOR. Dav/'0 IFoJE/Ybe/y BY MWM ATTORNEY.

Patented July 26, 1938 UNITED STATE S PATENT OFFICE MITER FORMING DEVICE FDR CURTAIN S AN-DfiTHE LIKE" 8. Claims.

This invention relates to miter formingdevic'es for curtains and-other'textil'e fabricarticles while they are'being sewn, andhas for one of its objects the provision of a device referred'to com- 5' prising a border, frame, or band-formingmember and means associated therewith for forming a- A still further object of the invention is the provision of such a device which will turn the 20k raw edges of the band or border material" inwardly to form a neat or clean edge where they are sewn to the curtain or other textile article.

Yet another object of the invention is theprovision of a miter forming device in' which the 25% miter forming or shaping shell or gage-maybe shifted into and out of operati'veposition.

Still another object of the invention is the provision of such a device in which the border or frame forming guide or members maybe pivotally 30 or hingedly connected to each other forconvenience in initially inserting the border forming fabric.

Another object is to produce-a device of the character described in which themaximumsim :1plicity of construction and operation is secured.

Other objects and advantages will appear 'as'thenature of the improvementsis better understood, the invention consisting substantially in the novel arrangement and co-relation of parts hereinfull'y 41): described and illustrated in the accompanying drawings, wherein similar reference characters are used to describe corresponding parts throughout the several views, and then finally'point'edout' and specifically defined and indicated in the ap- 45 pended claims.

The disclosure made the basisof' exemplifying the present inventive concept suggests a prac-- tical embodiment thereof, but the invention is not to be restricted'to the exact details of this dis- 50 closure, and the latter, therefore, is to be understood from an illustrative, rather than a restrictive standpoint.

In the accompanying drawings:

Figure l is a top. plan view of one: form offmy' 55: improved miter forming d'evice', showing'th'etmiteri forming shell in the normal ineffective position in-'fulllines=, and also showing same in dot and dashlinesineffective miter forming position;

Figure 2 is an'inverted' end View of the device looking'from' the top of Figure 1;

Figure 3 is a perspective view of same partly broken away;

Figure 4 is a crosssectional view' taken on line 4'4 Figure 1 Figure'5 is a; fragmental view in side elevation showing the miter folding or forming fingers within the'i'nterior of themiter forming shell as shown'indot and dash lines Figure 1;

Figure 6'is a cross sectional view taken on line 6-5' Figure 1 showingthe fabric folded about 15 themiter forming shell;

Figure '7 is a plan view of the-miter forming shell;

Figure'8 is a side view thereof looking from the right of Figure-7;

Figure 9 is a topplan view-of amodified form of my invention;

Figure lfl'is'a" side view thereof looking from the right of Figure 9 and Figure 11 isan end view'thereof looking from the bottom of Figure9.

Referringnow to Figures'l to 8 of the drawings inidetail l5 indicates the'borcler forming shell and guide of my improved miter forming device, the said shell comprising an outer U shaped wall I6 and an inner U shaped wall I! preferably bent therefrom, the said inner wall being spaced from the outer wall to form a U shaped channel l8 into which the. band or border forming material l9 maybe threaded or inserted. At each end of the channel. there is provided an L shaped strip or member. 20for bending the raw edges of the band forming. material inwardly to form turned over. edges ZI'Where the border is secured or sewn to the curtain material 22' (see Fig. 4)

Slidably yet frictionally mounted in guideways 23" is a'shell 24 which issubstantially U shaped in cross section and the rear end thereof being cut at an angle to formacute-angular folding edges 25; A handle26-issecured to theupper end of the shell-'24 by'whi'ch it may he slid to and fro in the shell l 5=between stops 2? and 28. The handle 26 protrudes outwardly from. the shell. l5. through an-elongated slot29'at' the right hand side of the device, the'said'slot being formed between guideways23;

At the left of the'device and extending longitudi'nally thereof there is slidably mounted in a pairof spaced apart bearings 39 a rod 3| which preferably'rectangular in cross'section. At the rear end of the rod 3| there is pivotally yet somewhat frictionally mounted a bifurcated block 32, the said mounting being provided by means of a pin 33 passing through the said block and a boss 34 forming the lower end of the rod. The block is provided with a handle 35 by which it may be rotated or swung about its pivot 33 to bring the miter folding fingers or pins 36 into the interior of the miter shaping shell 24 to bend the border material l8 inwardly' about the edges 25 and against the base 24 to form the miter joint 45 (see Fig. 1). If desirable the base 24 may be slotted as at 4! to permit the border forming material to be fully pressed rearwardly against the base 24 A pair of stops or collars l2 and 43 are provided on the rod 3|, the collar 43 being normally drawn against the rear bearing lug 39 by means of a spring 44 one end of which may be secured to a pin 45 carried by the front lug or bearing 30 and the opposite end of the said spring may be secured to a pin 46 carried by the collar 43 which is secured to the rod 39. The entire device may be adjustably mounted on the sewing machine by means of screws 47 passing through elongated slots 48 in a base or extension 49 secured to the lower wall portion of the outer wall l6.

In practice when sewing the border E9 to the curtain material 22, the edge of the said ourtain is inserted between the upper and lower layers of the said band and the curtain and band are then sewn together by a row of stitches 5! from the lower edge 52 of the curtainto the upper edge 53 of the said curtain. When in this position the bar 54 carrying the presser foot 55 is lifted up with the needle 56 penetrating the curtain and border material, and the miter shaping shell 24 is then moved to assume the dot and dash position shown in Figure 1. With the miter shell in its adjusted position, the block 32 is swung about its pivot 33 to bring the fingers 3'6 into their upper or dot and dash position. During the swinging of the said block and fingers the border material is folded inwardly of the miter shell and bent over the angular edges 25 to form the joint 45. The rod 3| is then pushed rearwardly of the machine or downwardly as indicated by the arrow 59 Figure 1 against the tension of the spring 44 until the fingers 36 are fully withdrawn from the miter joint. The block 32 is then swung to its normal ineffective position and the spring 44 is then permitted to return the rod to its normal inoperative position. If desired the spring 44 may be omitted and the rod may be manually moved forwardly and rearwardly. It will be understood that during the formation of the joint 40 the curtain 22 is moved until the horizontal edge 52 assumes the vertical position indicated in dot and dash lines at right of Figure l. The edge 53 also assumes a vertical position and it is then inserted and sewn to the border l9 along its entire length after which the mitering operation is repeated and so on until the entire curtain is completed.

t is to be understood that the curtain material does not pass through the shell, but the leading end edge thereof is inserted between the upper and lower layers of the folded band somewhat beyond the rear end of the outer shell, and as the sewing progresses the side edge of the curtain material is manually fed or inserted between the band layers by the operator.

In Figures 9 to 11 I have shown a modified form of my-invention wherein the band or border forming shell 60 comprises a lower section Bl of an upper wall or extension 64 bent inwardly from the lower wall BI and by a similar extension 65 bent from the upper wall 62. The said extensions are spaced from each other and from their respective sections to form a channel 66 in all respects similar to the channel l8. L shaped strips 5'! are provided in the right hand of the channel 66 to provide means for folding over the edges of the band forming material where it is sewn to the curtain.

The form of my invention just described is precisely the same as that shown in Figures 1 to 8 with the exception that the shell sections are hingedly connected to each other and the miter forming guide is stationary instead of movable.

To form the miter joint, the fingers 36 are operated to fold the fabric about the angular end edges 25 of the extensions 64 and 65 as in the form of my invention previously described. Slots or cut outs 68 are provided in the miter shaping guide so that the device may be moved close to the sewing machine needle.

From the foregoing it will be seen that I have provided a simple yet eiiicient device for forming miter joints on fabric articles such as ourtains, handkerchiefs, table cloths and the like, the use of which will save a great deal of time and insure a uniformity of such joints throughout the entire article or multiplicity of articles being sewn.

Having described my invention what I claim as new and desire to secure by Letters Patent is:

1. Amiter joint forming device for fabric articles, said devicebeing adapted to be secured to a sewing machine and comprising a band folding and guiding outer shell, an inner shell having a mitered end, means for folding the band material about the said mitered end to form a miter joint on the band, said means comprising pivotally mounted fingers adapted to be swung into the interior of the inner shell at the mitered end thereof, and a slidably mounted rod upon which the said fingers are carried for withdrawing same from the interior of the inner shell after the miter joint is formed.

5 2. A miter joint forming device for fabric articles, said device being adapted to be secured to a sewing machine and comprising a band folding and guiding outer shell, an inner shell slidably mounted in the outer shell for moving the said inner shell towards and away from the sewing machine needle, a mitered end on the said inner shell, and pivotally mounted means for folding the band material about the mitered end to form a miter joint on the said band.

3. A miter joint forming device for fabric articles, said device being adapted to be secured to a sewing machine and comprising a band folding and guiding outer shell, an inner shell slidably mounted in the outer shell for moving the said inner shell towards and away from the sewing machine needle, a mitered end on the said inner shell, pivotally mounted means for folding the band material about the mitered end to form a miter joint on the said band, and a slidably mounted rod upon which the said means is carried as and for the purpose specified.

4. A miter joint forming device for fabric articles adapted to be secured to a sewing machine, said device comprising an outer shell substantially U shaped in cross section, an inner shell spaced from the outer shell forming a band folding and guiding U shaped channel between the walls of said shells, means at the ends of the U shaped channel for folding the edges of the band, a substantially U shaped shell slidably mounted between the walls of the first mentioned inner shell, a mitered end on the said slidable shell, and pivotally mounted means for folding the band material about the mitered end to form a miter joint on the said band.

5. A miter joint forming device for fabric articles adapted to be secured to a sewing machine, said device comprising an outer shell substantially U shaped in cross section, an inner shell spaced from the outer shell forming a band folding and guiding U shaped channel between the walls of said shells, means at the ends of the U shaped channel for folding the edges of the band, a substantially U shaped slidably mounted shell between the walls of the inner shell, a mitered end on the said slidable shell, pivotally mounted means for folding the band material about the mitered end to form a miter joint on the said band, and a slidably mounted rod upon which the said pivotally mounted folding means is carried for the purpose specified.

6. A miter joint forming device for fabric articles, said device being adapted to be secured to a sewing machine and comprising a band folding and guiding outer shell, an inner shell having a mitered end, means for folding the band material about the said mitered end to form a miter joint on the band, said means comprising pivotally mounted fingers adapted to be swung into the interior of the inner shell at the mitered end thereof, a slidably mounted rod upon which the said fingers are carried for withdrawing same from the interior of the inner shell after the miter joint is formed, and a spring for returning the fingers to normal position after being withdrawn from the joint.

'7. A miter joint forming'device for fabric articles, the said device being adapted to be secured to a sewing machine and comprising a lower shell section having a lower and upper wall spaced from each other to form a channel substantially one-half of a U in cross section, an upper shell section formed similarly to the lower section and hingedly connected thereto, the upper wall of the lower section and the lower wall of the upper section forming inner walls and extending beyond the end of their respective outer walls, a mitered end on each of the said inner walls, pivotally mounted means for folding the fabric material about the mitered end, slidable means upon which the pivotal folding means is carried, and spring means for retracting the said slidable means after the material is folded about the mitered end.

8. A miter joint forming device for fabric articles, the said device being adapted to be secured to a sewing machine and comprising a lower shell section having a lower and upper wall spaced from each other to form a channel substantially one-half of a U in cross section, an upper shell section formed similarly to the lower section and hingedly connected thereto, the upper wall of the lower section and the lower wall of the upper section forming inner walls and extending beyond the end of their respective outer Walls, means on the said extending walls for folding the edges of the fabric, a mitered end on each of the said inner walls, pivotally mounted means for folding the fabric material about the mitered end, and a slidably mounted rod upon which the said pivotally mounted folding means is carried as and for the purpose specified.

DAVID H. ROSENBERG. 

